\documentclass[a4paper, 12 pt]{book}
\usepackage[utf8]{inputenc}
\usepackage[spanish]{babel}
\usepackage{graphicx}
\usepackage[margin=2.5cm]{geometry}
\usepackage{eso-pic}
\usepackage{colortbl}
\usepackage{tabularx}
\usepackage{url}
\usepackage{float}
\usepackage{hyperref}

\newcommand\BackgroundPicture{
\put(0,0){
\parbox[b][\paperheight]{\paperwidth}{%
\vfill
\centering
\includegraphics[width=\paperwidth,height=\paperheight,keepaspectratio]{../media/titlepage.png}%
\vfill
}}}

\newenvironment{itemize2}{
\begin{itemize}
	\setlength{\itemsep}{0pt}
	\setlength{\parskip}{0pt}}{
\end{itemize}
}

\newenvironment{enumerate2}{
\begin{enumerate}
	\setlength{\itemsep}{0pt}
	\setlength{\parskip}{0pt}}{
\end{enumerate}
}

\definecolor{LightBlue}{rgb}{0.8,0.85,1}
\definecolor{LightBlue2}{rgb}{0.91,0.95,0.98}
\definecolor{LightGreen}{rgb}{0.62,0.92,0.62}
\definecolor{LightPurple}{rgb}{0.92,0.76,0.76}
\definecolor{LightOrange}{rgb}{0.91,0.79,0.43}


\begin{document}

\AddToShipoutPicture*{\BackgroundPicture}
\title{}
\date{}
\maketitle
\thispagestyle{empty}
\cleardoublepage
\thispagestyle{empty}
\ClearShipoutPicture
\pagenumbering{roman}
\tableofcontents{}
\listoffigures
\listoftables

\input{chapters/about/main}
\input{chapters/introduction/main}
\input{chapters/planning/main}
\input{chapters/cost/main}
\input{chapters/requirementselicitation/main}
\input{chapters/requirementsanalysis/main}
\input{chapters/systemdesign/main}
\input{chapters/systemimplementation/main}
\input{chapters/systemtests/main}
\input{chapters/distribution/main}
\input{chapters/installation/main}
\input{chapters/useandconfiguration/main}
\input{chapters/servicecreation/main}

\bibliographystyle{ieeetr}
\bibliography{predesys}
\end{document}
